Valve devices



e) s @timidi hnelt weee@ i@ @anni i @iii Letters .Patent No. 86,195, dated Janna/ry 26, 1869.

IMPROVEMENT IN. STEAMiWHISTLE DRAIN-VALVE DEVICES.

The Schedule referred to in these Letters Patent and making p art of th same.

- To all whom 'it may-concern Be it known that we, THOMAS WINDELL and JOHN H. DORST, of New Albany, in the county of Floyd,

and in the State of Indiana, have invented certain new and useful Improvements in Anti-Vacuum and Drain- Valves for Steam-Thistle Pipes; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

The nature ot' our invention consists in the construction of an anti-vacuum .and drain-valve, and is intended particularly for whistle-pipes, to be attached on the whistle-valve, or at the bottom of the pipe, just above the whistle-valve-in other words, as near the valve as possible-so as to drain the condensed water from the pipe after the whistle has been blown; also, to prevent any vacuum forming or water freezing while the pipe is cooling oi.

In order to enable others skilled in the art to which our invention appertains, to make and use the same, we will now proceed to describeits @misti-notion and operation, referring to the annexed drawing, which forms a part of this speciiication, and which is a side elevation, part in section.

A represents a boiler, or steam-drum;

B, the whistle-valve;

O, the lever operating the same.

D is'the whistle-pipe, and

E, the whistle.

All these parts are constructed and arranged in any of the known and-usual ways.

As near as possible to the whistle-valve B, is placed the drain and vacuum-valve F, which opens into the pipe D.

The construction ofthe valve F is readily seen.

rlhe top of the little valve a has grooves or projections on its face, so that, when it is open, the water can pass through. h

The moment steam is let in the pipe D, for the purpose of4 blowing the whistle, the pressure will close the valve a, and will thus prevent leaking of steam through the drain-valve; but as soon as the whistle-valveBis closed, and the drain-valve has no more pressure of steam upon it, the spiral spring E opens it, and the water, as it forms from the condensed steam, will run out through the valve.'

The quantity of condensed water in whistle-pipes, especiall y on large steamboats, where the whistle is high above the decks, is considerable, and often lls the pipe suil'icient to freeze in cold weather. By the use of our valve thisis entirely obviated.

Another great advantage of ourinvention is, that when the whistle-,valve gets to leaking, which, as is well known, it soon does, although very little, that it can hardly be noticed, this leakage in the valve, with a high pressure oi' steam, will constantly force a small quantity of steam past the whistle-valve into the pipe above, where it forms into water, and lls the pipe with considerable of it, sometimes from one to three `gallons, which, when blown out, sprinkles the deck or roof of a boat too much for the passengers to endure; and in winter, if it should not freeze in the pipe, it will do so on the deck or roof. and make it unsafe` to walk on.

Our invention does away 'with all these inconveniences, as it carries off all the condensed water.

It is evident that the nearer our drain-valve is to the whistle-valve, the better it will answer the purpose to carry o this water from the pipe.

Having thus fully described our invent-ion,

What we cla-iin as new, and desire to secure by Letters Bntent, is

The arrangement of the whistle E, pipe' D, whistlevalve B, and the drain-valve F, when constrhcted and operating substantially as herein set forth.

l'n testimony that we claim the foregoing, we have hereunto set our hand, this th day of October, 1868.

THOMAS W'INDELL. JOHN H. DORST. Witnesses:

L. C. FERRY, MARTIN STEGER. 

